Electrical connecter



April 13 1926. w. A. EVANS ELECTRICAL CONNECTER Fied oct. a, i921 Patented Alim .135.19262 UNiTED STATES ylfrnufr orner..

WILLIAM A Ev'ANs, 0E nIDGEwoon, NEW JERSEY, AssIGNoE 'ro WESTERN ELEC- 'rma coMrANY, INcoEroRATED, oE NEW Yonx, N. Y., A coEPonArIoN 0E NEW ELEcrnIcAL'coNNEcrER.

Application mea october s, 1921. semine 508,265..

To all 'whom t may concern: A

Be it known that I, WILLIAM A. EVANS, a citizen of 'the United States, residing at Ridgewood, in the county of Bergen, State of New Jersey, .have invented certain new l and useful Improvements in Electrical Connecters, of which the following is a full,

clear, concise, and exact description.

This invention relates in general to electrical connecting devices and more particu- ',larly to devices of'the type wherein electrical connections are established by means of plugs and jacks.

It is the object of this invention to provide a structure for a lug connecter having contact members a justable in their lateral spacing, which is simple, inexpensive, and in which the parts are easily removable. l

This invention is an improvement of the type of plug described in C. W, Lowe Patent No. 1,309,253, issued July 8, 1919,.and provides a simplified construction to accomplish the above object. v

The invention in'its' preferred form is a plug commonly termed in telephone practice an operators plug, and comprises a pair of plug fingers each provided with a rectangw' lar A blocks fit adjustably within a easing or shell. The opposite edges of the vinsulating blocks are grooved to engage turned-in ends of a U-shaped yoke which also fits within the casing.- An aperture is providedthrough the casing and the yoke for the introduction of conductors connecting with the contacts onthe plug fingers, and through this a erture a bushingl screws into the yoke, hol ing the yoke wit inthe casing and the plug lingers within the yoke.

40 Theiuvention will be more clearly understood by reference to the following descrip tion of one form which the invention mayassume in practice, taken in connection with the accompanying drawing, 1n which Fig.

i 1 isa top view of the-plug assemblyyFig.` 2 is a longitudinal cross section; and Fig. 3

is a view of the various Partsof the plug indica-ting the method o assembling. In

the figures similar reference characters refer to similar parts.

Referring to the drawing, 1 and 2 are a `pair of plug fingers of the type ordinarily used 'for telephone switchboard plugs. They block of insulating material, which 'are each provided witha central conductor 3 which terminates at one end in a tip contact and at the other end in a threaded portion to form a suitable binding post 4; and

-a-sleeve contact 5 which-'is threaded at one end and provided with a nut 6. A shoulder 7 is lprovided on each of the plug fingers 1 and 2. On leach of the plug fingers is fas-l tened a block of insulating material 8. The insulating blocks 8.are clamped on the plug Vfingers between the shoulders 7 and the nuts responding aperture in the rear of the casing '13. A threaded bushing 11 passes through the aperture in the rear of the casing 13 and threads into the aperture 16 in the yokel 9, thereby holding the Various parts' within the shell.

The bushing 1'1 also provides a means for introducing the conductor cord 12 into the interior ot the plug shell so that its conductors may be connected with binding post 4 and a suitable lug 14 associated with the Contactin portions 3 and 5 respectively of the plug ngers T e strain relieving portion of the cord 12 is attached to a post15 which ts into'a ertures`- in each side of the yoke 9. The out ine of the insulating blocks 8 conforms generally to the shape of theopening in the casing 13, but allowance is made in their outlineto. a permit slight lateral movement. The lug ngers are, therefore, adjustable' within limits and adapt themselves to any slight inaccuracy in the distance between the centersofthe jacks (not shown) into which they are adapted to .be inserte From the above description it will be seen that the plug niay be completely taken apart for repair of thecord connections or replacement of defective parts by merely removing the bushing 11 which is. a very time to perform.

What is claimed is: movement and to permit lateral movement A connecting plug comprisin a pair of thereof, and a threaded bushing fastening plug fingers, a casing for the p ug fingers, the yoke within the casing and providing ac- 10 an msulating block supported on each plug cess therethrou h. 5 finger and grooved on opposite edges, a yoke In witness w ereof,-I hereunto subscribe cooperating with the grooves in the blocks to my name this 6th da of October A. D., 1921. hold the plug fingers gainst longitudinal v. W'IYLLIAM AJEVANS. 

